This experiment was conducted to establish the technology for artificial hay preparation in Korea. Using far-infrared heater, a device that can control temperature, airflow, and far-infrared radiation was produced and conducted on the fourth harvested alfalfa. The drying conditions were carried out by selecting a total of four conditions. For each condition, the radiation rate was set to around 40% (33-42%), and the temperature was set at 58~65℃, and the speed of the airflow was fixed at 60m/s. The overall drying time was set to 30 min in the single and 60 min (30-30 min) and 90 min (30-30-30 min) in the complex condition, and the radiation rate and temperature were changed by time period. In the case of drying condition 1, the final dry matter (DM) content was 46.26%, which did not reach a DM suitable for hay. However, all of the alfalfa corresponding to the remaining drying conditions 2 to 7 showed a DM content of 80% or more, resulting in optimal alfalfa hay production. In power consumption according to the drying conditions, the second drying condition showed the lowest at 4.7 KW, and the remaining drying conditions were as high as 6.5 to 7.1 KW. The crude protein content was found to be high at an average of 25.91% and it showed the highest content in the 5th drying condition (26.93%) and the lowest value in the 6th drying condition (25.16%). The digestibility showed a high value with an average of 84.90%, and there was no significant difference among treatments (p>0.05). Considering the above results, it was judged that drying condition 2 was the most advantageous.

ABSTRACT
Ⅰ. 서론
Ⅱ. 재료 및 방법
    1. 원적외선 건조 시스템의 구성
    2. 건조를 위한 사료작물의 수확
    3. 알팔파 시료 건조
    4. 사료가치 분석
Ⅲ. 결과 및 고찰
    1. 건조 조건의 설정
    2. 조건에 따른 건조 및 전력량
    3. 조건에 따른 건초 품질
Ⅳ. 요약
Ⅴ. 사사
Ⅵ. REFERENCES

• 김종근(서울대학교 국제농업기술대학원, 서울대학교 그린바이오과학기술연구원) | Jong Geun Kim (Graduate School of International Agricultural Technology, Seoul National University,Research Institute of Eco-friendly Livestock Science, Institute of GreenBio Science and Technology, Seoul National University) Corresponding author
• 김현래(서울대학교 그린바이오과학기술연구원) | Hyun Rae Kim (Research Institute of Eco-friendly Livestock Science, Institute of GreenBio Science and Technology, Seoul National University, Pyeongchang 25354, Republic of Korea)
• 정은찬(서울대학교 국제농업기술대학원) | Eun Chan Jeong (Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 25354, Republic of Korea)
• Ahmadi Farhad(서울대학교 그린바이오과학기술연구원)
• 장태균(한국에너지기술) | Tae Kyoon Chang (Korea Energy Technology Company, Limited, Seoul 08505, Republic of Korea)